METHOD FOR ECOLOGICALLY TREATING THE SURFACE OF A METALLIC CONTAINER, COMBINING A CHEMICAL ACTION AND A MECHANICAL ACTION

• Main Authors: HAEGELI, FRANCOISE, HENRIET, DOMINIQUE
• Format: Patent
• Language: English; French; German
• Published: 15.10.2008
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; CLEANING; CLEANING IN GENERAL; CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; PERFORMING OPERATIONS; PREVENTION OF FOULING IN GENERAL; TRANSPORTING

The invention relates to a method for treating the surface of a metallic container comprising at least one opening, using at least one treatment solution. The inventive method is characterised in that it consists of the following steps: the container is placed in a treatment enclosure in such a way that the opening thereof is downwardly oriented, said enclosure comprising a plurality of nozzles for blasting said solution under pressure and at least one receiving vessel; at least one blasting nozzle is introduced via the opening of the container; the enclosure is rendered gas-tight and liquid-tight; a treatment solution containing at least one degreasing, stripping, passivating, shining, cleaning, rinsing or colouring reagent is blasted by means of at least one blasting nozzle, under a minimum pressure of 8 bar; the solution is collected in the receiving vessel for recycling purposes; and optionally, other treatment solutions are successively blasted by means of at least one blasting nozzle, and are successively collected after use in a receiving vessel for recycling purposes, until the desired surface state is obtained. The invention also relates to a treatment device and a treatment line.